Ftp Protocol Error. 421
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good, bad or incomplete: Range Purpose 1xx Positive Preliminary reply The requested action is being initiated; expect another reply before proceeding with a new command. (The user-process sending another command before the completion reply would ftp error 421 service not available be in violation of protocol; but server-FTP processes should queue any commands that arrive ftp error codes while a preceding command is in progress.) This type of reply can be used to indicate that the command was accepted and
Ftp Response 421 Received. Server Closed Connection
the user-process may now pay attention to the data connections, for implementations where simultaneous monitoring is difficult. The server-FTP process may send at most, one 1xx reply per command. 2xx Positive Completion reply The requested
Ftp Error 426
action has been successfully completed. A new request may be initiated. 3xx Positive Intermediate reply The command has been accepted, but the requested action is being held in abeyance, pending receipt of further information. The user should send another command specifying this information. This reply is used in command sequence groups. 4xx Transient Negative Completion reply The command was not accepted and the requested action did not take place, but the error ftp return codes mainframe condition is temporary and the action may be requested again. The user should return to the beginning of the command sequence, if any. It is difficult to assign a meaning to "transient", particularly when two distinct sites (Server- and User-processes) have to agree on the interpretation. Each reply in the 4xx category might have a slightly different time value, but the intent is that the user-process is encouraged to try again. A rule of thumb in determining if a reply fits into the 4xx or the 5xx (Permanent Negative) category is that replies are 4xx if the commands can be repeated without any change in command form or in properties of the User or Server (e.g., the command is spelled the same with the same arguments used; the user does not change his file access or user name; the server does not put up a new implementation.) 5xx Permanent Negative Completion reply The command was not accepted and the requested action did not take place. The User-process is discouraged from repeating the exact request (in the same sequence). Even some "permanent" error conditions can be corrected, so the human user may want to direct his User-process to reinitiate the command sequence by direct action at some point in the future (e.g., after the s
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Ftp Error 500
site About Us Learn more about Stack Overflow the company Business Learn sftp error codes more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x ftp command codes Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up FTP https://en.wikipedia.org/wiki/List_of_FTP_server_return_codes response 421 received. Server closed connection up vote 6 down vote favorite I am writing a JAVA code to traverse FTP Location using Apache Commons Net FTPClient and getting output in an Excel file. the code execute correctly for approx 5 min but then gives IO Exception "org.apache.commons.net.ftp.FTPConnectionClosedException: FTP response 421 received. Server closed connection." I am using commons-net-3.0.1.jar. I have done some R&D http://stackoverflow.com/questions/24799518/ftp-response-421-received-server-closed-connection and tried setDefaultTimeout(6000); setConnectTimeout(3000); setSoTimeout(3000); enterLocalPassiveMode(); sending noop(); but still getting the same error. All I am trying to do is traverse through a directory and if file is found than get file name and file update date in excel else if directory is found then get inside and do until file is found again. Please help and ask if any other information is required. I am new to JAVA. java ftp ftp-client connection-timeout socket-timeout-exception share|improve this question asked Jul 17 '14 at 9:19 crazyproton 38116 add a comment| 2 Answers 2 active oldest votes up vote 4 down vote accepted See here: http://kb.globalscape.com/KnowledgebaseArticle10142.aspx Error 421 Service not available, closing control connection. Error 421 User limit reached Error 421 You are not authorized to make the connection Error 421 Max connections reached Error 421 Max connections exceeded Maybe you're not reusing a connection but using a new connection for every request, flooding the server with connections until it hits the connection limit. Try closing your connections or resuing them. share|improve this answer answered Jul 17 '14 at 9:28 fiffy 503411 Yer you were right. I was exhausting the
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